Finding the Fourth Proportional to 2,886.48, 4,328.56 and 938.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.48 : 4,328.56 = 938.16 : x
2. Step 2: Convert to fraction form
   2,886.48/4,328.56 = 938.16/x
3. Step 3: Cross multiply
   2,886.48x = 4,328.56 × 938.16
4. Step 4: Simplify right side
   2,886.48x = 4,060,881.85
5. Step 5: Solve for x
   x = 4,060,881.85/2,886.48
6. Step 6: Final answer
   x = 1,406.86